It might sound like a strange idea to put an Apple Store in a train station, especially one that's fairly close to several existing Apple Stores. But the Fifth Ave. store is reportedly overcrowded already (even though it's Apple's only 24-hour location), and obviously Grand Central Terminal is prime real estate for well-heeled shoppers, considering all of the commuters that come through from Westchester, Connecticut and other suburbs every day. I doubt the space will be cheap, but Apple's got some of the deepest pockets around.

No word yet on how long it would take for an Apple Store to get approved and built, if indeed the rumors are true and Apple is trying to get in there at all. We'll stay tuned. If the store does come, it would join the five existing (plus one hypothetical) stores in the five boroughs of New York City, continuing the Big Apple's dominance as the densest urban concentration of Apple retail.